KSIM20912-H216 KSIM30912-H216 KSIM40912-H216

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1 SERVICE MANUAL KLIMAIRE AIRCONDITIONER KSIM DC INVERTER MULTI TYPE KSIM20912-H216 KSIM30912-H216 KSIM40912-H216 DC MULTI OUTDOOR UNITS

2 CONTENTS 1. General information of Outdoor Units Features Dimensions Wiring Diagram Refrigeration Cycle Diagram Indoor units combination Electronic control function Troubleshooting...15

3 1. General information of Outdoor Units Dimension (mm) Net/Gross weight (kg) Compressor KSIM20912-H x320x /57 DA130S1C-20FZ KSIM30912-H x320x700 57/60.5 DA150S1C-20FZ KSIM40912-H x345x / 90 TNB306FPGMC-L Model name

4 2 Features Outdoor unit Power relay control Low noise air flow system Hydrophilic aluminum fin The hydrophilic fin can improve the heating efficiency at operation mode. 4 way valve control It is only operated in the heating operation mode except defrosting operation. Anti-rust cabinet Valve protection cover It protects the valves and prevents water from dripping. Discharge pipe temperature protection Compressor crankcase heater

5 3. Dimensions a) KSIM20912-H216 KSIM30912-H216 b) KSIM40912-H216

6 4. Wiring Diagram 4.1 KSIM20912-H KSIM30912-H216

7 4.3 KSIM40912-H216

8 5. Refrigeration Cycle Diagram 8.1 Refrigeration circuit drawing of inverter binary type 4-way valve Exhaust temp. sensor Axial flow fan Condenser Coil temp. sensor Main Capillary Auxiliary Capillary Check Valve EXVA Capillary A EXVB Capillary B Filter A Filter B Liquid valve A Liquid valve B flow fan Cross Evaporator Indoor pipe out temp. sensor A Gas valve A Compressor Indoor pipe out temp. sensor B Gas valve B Outdoor Unit 5.2 Refrigeration circuit drawing of inverter trinary type Indoor Unit Exhaust temp. sensor Axial flow fan Main Capillary Auxiliary Capillary Capillary A Capillary B EXV A EXV B Filter A Liquid valve A Liquid valve B 4-way valve Condenser Coil temp. sensor Check Valve Capillary C EXV C Filter B Filter C Liquid valve C flow fan Cross Evaporator Compressor Indoor pipe out temp. sensor A Indoor pipe out temp. sensor B Indoor pipe out temp. sensor C Gas valve A Gas valve B Gas valve C Outdoor Unit 8.3 Refrigeration circuit drawing of inverter quadplex type Indoor Unit

9 6. Indoor units combination 6.1 Indoor unit combination for KSIM20912-H216 One unit Two unit Indoor unit combination for KSIM30912-H216 One unit 9 12 Two unit Three unit Indoor unit combination for KSIM40912-H216 One unit Two unit Three unit Four Unit

10 7. Electronic control function 7.1 Abbreviation T1: Indoor ambient temperature T2: Coil temperature of indoor heat exchanger middle. T2B: Coil temperature of indoor heat exchanger outlet. T3: Coil temperature of outdoor heat exchanger T4: Outdoor ambient temperature T5: Compressor discharge temperature Ts: Setting temp. 7.2 Electric control working environment Input voltage: 230V Input power frequency:60hz Indoor fan normal working amp. is less than 1A Outdoor fan. rmal working amp. is less than 1.5A Four-way valve normal working amp. is less than 1A Swing motor: DC12V. 7.3 Outdoor unit s digital display tube There is a digital display tube in outdoor PCB. Digital display tube display function In standby, the LED displays - - In compressor operation, the LED display the running frequency, In defrosting mode, The LED displays df or alternative displays between running frequency and df (each displays 2s) In compressor pre-heating, The LED displays - - In protection or malfunction, the LED displays error code or protection code. 7.4 Outdoor unit point check function There is a check switch in outdoor PCB. Push the switch SW1 to check the states of unit when the unit is running. The digital display tube will display the follow procedure when push SW1 each time. Display Indoor unit capacity demand code Outdoor unit running mode code Amendatory capacity demand code Outdoor unit fan motor state Evaporator outlet temp. for 1# indoor unit Evaporator outlet temp. for 2# indoor unit Evaporator outlet temp. for 3# indoor unit Evaporator outlet temp. for 4# indoor unit Condenser pipe temp. Ambient temp. Compressor discharge temp. Inverter current Remark Off:0, Cooling:1, Heating:2 Off:0, Low speed:1, High speed:2 Actual data Actual data Actual data Actual data Actual data Actual data Actual data Actual data EXV open angle for 1# indoor unit Actual data divide 8

11 EXV open angle for 2# indoor unit Actual data divide 8 EXV open angle for 3# indoor unit Actual data divide 8 EXV open angle for 4# indoor unit Actual data divide 8 Power supply of outdoor unit AD data 18 Indoor unit number The indoor unit can communicate with outdoor unit well. 19 The last error or protection code 00 means no malfunction 20 frequency value Actual data 21 Ambient temp. of 1# indoor unit Actual data 22 Condenser pipe temp. of 1# indoor unit Actual data 23 Ambient temp. of 2# indoor unit Actual data 24 Condenser pipe temp. of 2# indoor unit Actual data 25 Ambient temp. of 3# indoor unit Actual data 26 Condenser pipe temp. of 3# indoor unit Actual data 27 Ambient temp. of 4# indoor unit Actual data 28 Condenser pipe temp. of 4# indoor unit Actual data Check point over The following items from to are for the explanation of the point check functions Frequency of compressor: Display Stand by Frequency of compressor (Hz) Running mode: Display Corresponding mode 0 Off 1 Cooling mode 2 Heating mode Capacity demand: Cooling mode Capacity Correspondi ng Code Heating mode Capacity Correspondin g Code > >= te: The capacity is just for reference > >=11

12 7.4.4Number of indoor unit Display Number of indoor unit Outdoor ambient temp: Display Corresponding temp. Display Corresponding temp. Display Corresponding temp ~ ~ ~ ~ ~ ~ ~

13 7.4.6 Opening degree of electronic expansion valve: Actual opening degree equals the display data divided Protection Three minutes delay at restart for compressor Temperature protection of compressor discharge. When the compressor discharge temp. is getting higher, the running frequency will be limited as below rules: ----If 102 <T5<115, decrease the frequency to the lower level every 2 minutes till to F1. ---If T5>115 for 10 seconds, the compressor will stop and restart till T5< Low voltage protection VOLTAGE VOLREL1 limit VOLLIMT1 VOLFRE1 VOLREL2 VOLLIMT2 VOLFRE2 VOLREL3 VOLLIMT3 Off Model VOLLIMT1 VOLLIMT2 VOLLIMT3 VOLREL1 VOLREL2 VOLREL3 VOLFRE1 VOLFRE2 KSIM20912-H KSIM30912-H KSIM40912-H te: if the low voltage protection occurs and not resumes within 3min, it will keep the protection always after restart the machine Compressor current limit protection If the compressor current exceeds the current limit value for 10 seconds, the compressor frequency will be limited as below table. Cooling mode: Current frequency(hz) Current limit value(a) COOL_F10 ICOOLLMT6 COOL_F9 ICOOLLMT5 COOL_F8 ICOOLLMT4 COOL_F7 ICOOLLMT3 COOL_F6 ICOOLLMT2 COOL_F5 ICOOLLMT1 Frequency limit Decrease the frequecny to COOL_F4 and run at COOL_F4 for 3 minutes. After that,the frequency will be adjusted according to the capacity demand and rise to the upper level every 3 minutes (When the frequency>cool_f4 via capacity demand). If the current frequency is lower than COOL_F4, the frequency will not be limited. After 10s of the compressor start, if the current>icool,the AC will display the failure for 30 seconds and stop. The AC will restart 3 minutes later. Heating mode: Current frequency(hz) Current limit value(a) Frequency limit HEAT_F12 IHEATLMT8 HEAT_F11 IHEATLMT7 Decrease the frequency to HEAT_F4 and run at HEAT_F4 for 3 minutes. HEAT_F10 IHEATLMT6 HEAT_F9 IHEATLMT5 HEAT_F8 IHEATLMT4 After that, the frequency will be adjusted according to the capacity demand and rise to the upper level every 3 minutes

14 HEAT_F7 IHEATLMT3 HEAT_F6 IHEATLMT2 HEAT_F5 IHEATLMT1 (When the frequency>heat_f4 via capacity demand). If the current frequency is lower than HEAT_F4, the frequency will not be limited. After 10s of the compressor start, if the current>iheat,the AC will display the failure for 30 seconds and stop. The AC will restart 3 minutes later Indoor / outdoor units communication protection If the indoor units can not receive the feedback signal from the outdoor units for 2 minutes, the AC will stop and display the failure High condenser coil temp. protection. When T3>65 for 3 seconds, the compressor will stop while the indoor fan and outdoor fan will continue. When T3<52, the protection will release and the compressor will restart after 3 minutes Outdoor unit anti-freezing protection When T2B<0 for 250 seconds, the indoor unit capacity demand will be zero and resume to normal when T2B> Oil return Running rules: 1. If the compressor frequency keeps lower than RECOILINFRE for 2hours,the AC will rise the frequency to RECOILFRE for 3mins and then resume to former frequency. Model 2. KSIM20912-H216 RECOILINFRE 45 KSIM30912-H KSIM40912-H During the oil return process, the EXV and indoor units keep the current running mode, the frequency will not be limited by the compressor discharge temp. and the current Compressor preheating functions ----Preheating permitting condition: If T4(outdoor ambient temperature) 3 and newly powered on or if T4 3 and compressor has stopped for over 3 hours, the compressor heating cable will work. ----Preheating mode: A weak current flow through the coil of compressor from the wiring terminal of compressor, then the compressor is heated without operation. ----Preheating release condition: If T4 5 or the compressor starts running, preheating function will stop Compressor crankcase heater When T4<3 and the compressor is not running,the crankcase heater will be active. When T4 5 or the compressor starts up,the crankcase heater will stop work.

15 8. Troubleshooting 8.1 Indoor unit error code explanation: Vertu series: Display E0 E1 E2 E3 E5 E6 P0 P1 P2 P3 P4 EEPROM error Communication error between indoor and outdoor unit Zero-crossing examination error Fan speed beyond control Outdoor units temp. sensor or connector of temp. sensor is defective Indoor units temp. sensor or connector of temp. sensor is defective Inverter module protection Outdoor voltage too low protection Compressor discharge temp. protection Outdoor temp. too low protection Compressor driving protection 9A series: NO. MALFUNCTION DEF TIMER AUTO RUN DISPLAY DIGITAL TUBE 1 EEPROM error O O O O E0 2 Indoor / outdoor units communication protection E1 3 Zero-crossing signal error O O E2 4 Indoor fan speed out of control O O E3 5 Outdoor unit temp. sensor or connector of temp. sensor is defective X O X E5 6 Indoor units temp. sensor or connector of temp. sensor is defective O O O E6 7 Outdoor fan speed out of control O E7 8 IBM malfunction or IGBT over-strong current protection X X O P0 9 Over voltage or too under voltage protection X O O P1 10 Temperature protection of compressor top. O X X P2 11 Compressor position protection O X P4 12 Inverter module protection X O P5 8.2 Outdoor unit error code explanation: Display E0 E1 E2 E3 E6 E4 E5 E7 P0 P1 P2 P3 P4 P5 P6 P7 PF EEPROM error 1 Indoor units pipe temp. sensor or connector of pipe temp. sensor is defective 2 Indoor units pipe temp. sensor or connector of pipe temp. sensor is defective 3 Indoor units pipe temp. sensor or connector of pipe temp. sensor is defective 4 Indoor units pipe temp. sensor or connector of pipe temp. sensor is defective Outdoor temp. sensor or connector of temp. sensor is defective Compressor volt protection Communication error between outdoor IC and DSP Compressor discharge temp. protection High pressure protection (just for 36K 1x4 units.) Low pressure protection (just for 36K 1x4 units.) Compressor current protection Inverter module protection Outdoor temp. too low protection Condenser high-temperature protection Compressor driving protection PFC protection (just for 36K 1x4 units.)

16 8.3 Trouble shooting Indoor unit trouble shooting Indoor unit display E0 EEPROM error Circuit or software error on indoor PCB Replace indoor PCB Indoor unit display E1 outdoor communication error Disconnect the power supply, after 1 minute, connect the power supply, turn on the unit with remote controller Does the unit work normally? NO Check the wiring between indoor and outdoor unit. Is the connection of L, N, S and GND good? Is the GND connection on outdoor PCB good? NO Reconnect and retest again Is the LED4(red) on outdoor PCB bright and LED1(yellow) blinking? Replace indoor PCB and repower on. Is the failure cleared? The power supply for outdoor PCB is fail. Check the wiring on outdoor PCB comparing with wiring plate. Is the connection good? Correct the connection. Replace outdoor e-box. Indoor unit display E2 Zero-crossing examination error

17 Is power supply and connection of connectors good? NO Be sure the power supply is good and correct the connection Indoor PCB is defective. Replace the indoor PCB. Indoor unit display E3 Fan speed beyond control Is the indoor fan motor connector and connection good? NO Repair the connector and reconnect Is voltage being applied to the fan motor? (rang 90v-160v between mid pin and N on CN1 Indoor PCB is defective. Replace the indoor PCB. NO Replace the indoor fan motor Indoor unit display E5 Outdoor units temp. sensor or connector of temp. sensor is defective Is the outdoor temperature sensor connector and connection good? NO Repair the connector and reconnect Replace the sensor and check if E5 display again? Replace outdoor e-box Indoor unit display E6 Indoor units temp. sensor or connector of temp. sensor is defective

18 Is the indoor temperature and evaporator sensor connector and connection good? NO Repair the connector and reconnect Replace the sensor and check if E6 display again? Replace the.indoor PCB Indoor unit display P0 Inverter module protection Is voltage normal? NO Revise the power and retest. Is all connection good? NO Revise the power and retest. Is the wiring to compressor right? Check the modular if some components blow out or be failure? Repair or replace the modular. Is it breakdown between P-N, P-V, P-W, N-V,N-W or V-W of inverter moduler? Replace the modular. Check the compressor. Indoor unit display P1 Outdoor voltage protection Is the power supply good? NO Be sure the power supply is normal when using the units Replace the outdoor e-box.

19 Indoor unit display P2 Compressor top protection against temperature Does compressor operate? NO Is the connection good? NO Reconnect and retest. Is refrigerant circulation volume normal? NO Is protector normal? NO Replace the protector. Charge refrigerant Check the outdoor main PCB. Is there some problem? Is abnormality the same after gas charging? Replace the outdoor PCB. NO Check refrigerant system (such as clogging of capillary, Indoor unit display P3 Compressor current protection The trouble shooting is same with one of outdoor unit P3 protection Outdoor unit trouble shooting Outdoor unit display E0 EEPROM error Circuit or software error on indoor Replace indoor Outdoor unit display E1 1 Indoor units pipe temp. sensor or connector of pipe temp. sensor is defective

20 Is connection to connector of pipe temp. sensor good? Check the resistance of the temp. sensor according to Annex 1 Repair connector Replace the sensor Outdoor unit display E2 2 Indoor units pipe temp. sensor or connector of pipe temp. sensor is defective Is connection to connector of pipe temp. sensor good? Check the resistance of the temp. sensor according to Annex 1 Repair connector Replace the sensor Outdoor unit display E3 3 Indoor units pipe temp. sensor or connector of pipe temp. sensor is defective Is connection to connector of pipe temp. sensor good? Check the resistance of the temp. sensor according to Annex 1 Repair connector Replace the sensor

21 Outdoor unit display E6 4 Indoor units pipe temp. sensor or connector of pipe temp. sensor is defective Is connection to connector of pipe temp. sensor good? Check the resistance of the temp. sensor according to Annex 1 Repair connector Replace the sensor Outdoor unit display E4 Outdoor units temp. sensor or connector of temp. sensor is defective Is connection to connector of pipe temp. sensor good? Check the resistance of the temp. sensor according to Annex 1 Repair connector Replace the sensor Outdoor unit display E5 Compressor volt protection

22 Check the voltage of power supply, if the voltage is about 220V, turn off the power supply to indoor unit and turn it on again after 1 minute Does the trouble occur again? Check the voltage of secondary of T3 transformer in outdoor power board, is this voltage 12-14V(AC) Replace the outdoor power board

23 Outdoor unit display E7 outdoor units communication protection Is the LED in outdoor main PCB light? Check the signal wires between outdoor PCBs, is it connected good. 1.Is the +5 voltage in outdoor main board? Power Board: CN4, Red wire and yellow (GND) Outdoor main PCB: CZ1 2.Is the +3.3v voltage in outdoor main board? Power Board: CN1, Purple wire and yellow (GND) Inverter module defective. Rectifier circuit is bad connection or defective when the voltage in outdoor is abnormal. D and N: 310V(DC); Check the IC6, IC7 (at Outdoor power PCB) rmally: Input voltage: <5V, changeable Output voltage:<5v, changeable Outdoor power PCB is defective.

24 Outdoor unit display P0 Compressor top protection against temperature Off: 105c; On: 90c The trouble shooting is same with the one of indoor unit P2 protection. Outdoor unit display P3 Compressor current protection Check the resistance of compressor, normally U and V is 1 ohm U and W is 1 ohm V and W is 1ohm The compressor is defective Turn one indoor unit only, Does the compressor start after 3 minutes? The compressor is defective Does the trouble occur again after compressor running some time? Check the refrigerant circulation volume and pressure If refrigerant circulation volume and pressure is OK, change the outdoor main PCB. Outdoor unit display P4 Compressor drive malfunction drive protection arose

25 Are the U,V,W connected to compressor and inverter module right? Replace the outdoor power board Repair connector If the problem comes to again, check wingding resistance of inverter compressor, is it 1 ohm? Replace inverter compressor Outdoor unit display P4(LED flashes for nine times) Compressor drive malfunction module protection arose Are the U,V,W connected to compressor and inverter module Replace the module to see if it is normal Repair connector Replace the outdoor power board If the problem comes to again, check wingding resistance of inverter compressor, is it right? Replace inverter compressor

26 Outdoor unit display P6 Condenser high-temperature protection When outdoor pipe temp. is more than 65 C, the unit will stop, and unit runs again when outdoor pipe temp. less than 52 C. Is the outdoor pipe temp. more than 65 C? Is the outdoor pipe temp sensor right according to the annex 1 Replace the outdoor main board Replace the outdoor pipe temp sensor

27 Outdoor unit display PF PFC module protection Check the voltage of power supply, if the voltage is about 220V, turn off the power supply and turn it on again after 1 minute Does the unit work normally? Check whether the power supply of bridge rectifiers input port is normal. Replace the outdoor PCB Check whether the power supply of bridge rectifiers output port is 325VDC Replace bridge rectifiers Check whether the voltage between P and N port in IPM is 380V. Check whether the PFC inductance is normal. Replace PFC Check whether the wiring between PCB and PFC module is normal. Replace the PFC inductance Replace outdoor e-box.

28 Annex 1 Characteristic of temp. sensor Temp. Resistance K Temp. Resistance K Temp. Resistance K

29

30 Annex 2 1. Reference voltage data: a) Rectifier : Input : V(AC), output :310V(DC) b) Inverter module: U,V, W 3ph. Result U-V U-W V-W V(AC) V(AC) V(AC) P-N DC 31 0V c) Photo-couple PC817, PC851: Control side <+5V, AC side :< 24V(AC) d) S terminal and N: changeable from 0-24V 2. Check the Diode Bridge component ( In wiring diagram, rectifier) Remark: If this part is abnormal, the LED will not light. ~ + - ~ Multi-meter Result Forward Resistance Backward Resistance + _ Infinite Infinite ~ ~500 ohm Infinite ~ + - ~ ~500 ohm Infinite ~

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